in part because cruises represent such a strong value proposition in this environment. one more thing before i drill down to whether you should sail away on carnival or royal caribbean. for cruise operators, net yield is how we measure them, the purest measure of a kruds company's pricing power. net yield is the ticket price minus the cost of getting there, plus on board spending, minus any commissions paid to travel agents, all which is then divided by the number of veil cruise days. simply put, this is a metric that tells you how much the cruise companies are squeezing out of their passengers. you get a 1% change in net yield in carnival or royal caribbean, that's enough for a 7% earnings in share for either company. this is a gigantic, incredibly easy way to tell how their business is doing, like same-store sales tore retail or revenue per available room for hotels. right now the net yield is in a fabulous position to go higher, thanks to higher demand, lower supply of ships and more and more people are booking online. given that commissions are paid right to the tra